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20 lines
4.0 KiB
Markdown
20 lines
4.0 KiB
Markdown
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### ClickHouse release v21.3.6.55-lts FIXME as compared to v21.3.5.42-lts
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#### Improvement
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* Backported in [#22811](https://github.com/ClickHouse/ClickHouse/issues/22811): If PODArray was instantiated with element size that is neither a fraction or a multiple of 16, buffer overflow was possible. No bugs in current releases exist. [#21533](https://github.com/ClickHouse/ClickHouse/pull/21533) ([Alexey Milovidov](https://github.com/alexey-milovidov)).
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* Backported in [#22823](https://github.com/ClickHouse/ClickHouse/issues/22823): Add profile event HedgedRequestsChangeReplica, change read data timeout from sec to ms. [#21886](https://github.com/ClickHouse/ClickHouse/pull/21886) ([Kruglov Pavel](https://github.com/Avogar)).
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* Backported in [#22936](https://github.com/ClickHouse/ClickHouse/issues/22936): Correctly check structure of async distributed blocks. [#22325](https://github.com/ClickHouse/ClickHouse/pull/22325) ([Azat Khuzhin](https://github.com/azat)).
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#### Bug Fix
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* Backported in [#22968](https://github.com/ClickHouse/ClickHouse/issues/22968): Fix very rare bug when quorum insert with `quorum_parallel=1` is not really "quorum" because of deduplication. [#18215](https://github.com/ClickHouse/ClickHouse/pull/18215) ([filimonov](https://github.com/filimonov)).
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* Backported in [#22723](https://github.com/ClickHouse/ClickHouse/issues/22723): Check if table function view is used as a column. This complements https://github.com/ClickHouse/ClickHouse/pull/20350. [#21465](https://github.com/ClickHouse/ClickHouse/pull/21465) ([Amos Bird](https://github.com/amosbird)).
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* Backported in [#22807](https://github.com/ClickHouse/ClickHouse/issues/22807): Follow-up fix for [#21936](https://github.com/ClickHouse/ClickHouse/issues/21936). Also fixes [#22433](https://github.com/ClickHouse/ClickHouse/issues/22433). [#22518](https://github.com/ClickHouse/ClickHouse/pull/22518) ([Ivan](https://github.com/abyss7)).
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* Backported in [#22759](https://github.com/ClickHouse/ClickHouse/issues/22759): Fix usage of function `map` in distributed queries. [#22588](https://github.com/ClickHouse/ClickHouse/pull/22588) ([foolchi](https://github.com/foolchi)).
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* Backported in [#22701](https://github.com/ClickHouse/ClickHouse/issues/22701): Fix wait for mutations on several replicas for ReplicatedMergeTree table engines. Previously, mutation/alter query may finish before mutation actually executed on other replicas. [#22669](https://github.com/ClickHouse/ClickHouse/pull/22669) ([alesapin](https://github.com/alesapin)).
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* Backported in [#22738](https://github.com/ClickHouse/ClickHouse/issues/22738): Fix possible hangs in zk requests in case of OOM exception. Fixes [#22438](https://github.com/ClickHouse/ClickHouse/issues/22438). [#22684](https://github.com/ClickHouse/ClickHouse/pull/22684) ([Nikolai Kochetov](https://github.com/KochetovNicolai)).
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* Backported in [#22892](https://github.com/ClickHouse/ClickHouse/issues/22892): Fix approx total rows accounting for reverse reading from MergeTree. [#22726](https://github.com/ClickHouse/ClickHouse/pull/22726) ([Azat Khuzhin](https://github.com/azat)).
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* Backported in [#22922](https://github.com/ClickHouse/ClickHouse/issues/22922): Fix pushdown of `HAVING` in case, when filter column is used in aggregation. [#22763](https://github.com/ClickHouse/ClickHouse/pull/22763) ([Anton Popov](https://github.com/CurtizJ)).
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* Backported in [#22916](https://github.com/ClickHouse/ClickHouse/issues/22916): LIVE VIEW (experimental feature). Fix possible hanging in concurrent DROP/CREATE of TEMPORARY LIVE VIEW in `TemporaryLiveViewCleaner`, see https://gist.github.com/vzakaznikov/0c03195960fc86b56bfe2bc73a90019e. [#22858](https://github.com/ClickHouse/ClickHouse/pull/22858) ([Vitaly Baranov](https://github.com/vitlibar)).
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* Backported in [#22920](https://github.com/ClickHouse/ClickHouse/issues/22920): Fixed a crash when using `mannWhitneyUTest` and `rankCorr` with window functions. This fixes [#22728](https://github.com/ClickHouse/ClickHouse/issues/22728). [#22876](https://github.com/ClickHouse/ClickHouse/pull/22876) ([Nikita Mikhaylov](https://github.com/nikitamikhaylov)).
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